Toyota error code P0A94 DC/DC Inverter Performance | Toyota Inverter Repair

Toyota Prius Hybrid (XW30) 2012-2014 Inverter (49025)

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The Toyota P0A94 fault code occurs when your vehicle's battery voltage is reduced, and this is detected by the Engine Control Module. The exact error codes that can be read are P0A94-172 and P0A94-557, both of which refer to a problem with the performance of the DC/DC Converter.

Which Toyota models could be affected?

What are the symptoms of P0A94-172 / P0A94-557 fault codes?

Problems with the DC/DC inverter ensure that the electric motor in the car does not function properly. This can mean that these hybrid cars only run on the combustion engine, or that the car does not want to start at all.

Safety precautions

Before inspecting any high-voltage system, take proper safety precautions to prevent an electric shock. For example, wear insulated gloves and remove the service plug. Keep this service plug with you to prevent others from reconnecting it while you are working on the high-voltage system. After disconnecting the service plug, wait at least 5 minutes before touching the high-voltage connectors or terminals.

The fix for this Toyota inverter malfunction

First, check if the wiring between the inverter and the ECU has a problem. If the wiring harness looks good, the inverter has likely failed.

ACTRONICS has a remanufacturing solution available to fix this issue. Remanufacturing the inverted is a sustainable and cost-effective alternative to tackle this problem and get the vehicle functioning optimally again.

Simply create a repair order on our website, follow the steps indicated, and we will do the rest. Our engineers will repair the part with the utmost care, and we will always keep you informed of the current status of the order.

If you have any questions about a suspected malfunctioning Toyota inverter or about how you can best send this part to us safely, our product specialists are happy to help you!